Red-Hot LinkedIn IPO Heats Up Tech Bubble Talk — (Updated at 4 p.m. EDT with closing stock price and commentary.) — LinkedIn went public Thursday and, as expected, soared in its debut. But the social network for professionals outdid even the wildest expectations in what has become …

Facebook's New Way to Combat Child Pornography — As online photo sharing has exploded so has, tragically, the distribution of child pornography. But while the rise of the Internet and digital cameras have revived a scourge that had nearly been eliminated in the late 1980s, new technology may also help to beat it back again.

Apple to support reps: “Do not attempt to remove malware” — Apple is actively conducting an internal investigation into the Mac Defender malware attack I wrote about yesterday (here and here). An internal document with a Last Modified date of Monday, May 16, 2011 notes that this is an “Issue/Investigation In Progress.”

Exclusive: A First Look at AT&T's LTE Network — Yesterday, I took a tour of AT&T's Foundry space in Plano, Texas. I interviewed Jon Summers, SVP of application and service infrastructure at AT&T, with other reporters, to try to understand the shift AT&T is making in how it approaches buying goods …

Netflix Is On A Hiring Spree For Big Europe Push — Netflix is staffing up for a big European push as soon as the second half of 2011. — Netflix CEO Reed Hastings said back in December that the company would consider expanding to Europe and Asia once the results of its Canadian operation, which it launched last fall, became clear.

Read Léo Apotheker's “Tough Quarter” Memo in Full — The memo that Hewlett-Packard CEO Léo Apotheker sent to his senior executive team about facing a “tough quarter” certainly created plenty of ripples. For one thing, it caused HP to move up its quarterly earnings announcement …

Sony Tells Dev Partners PlayStation Store To Return May 24 — Barring any additional problems, Sony plans to bring the PlayStation Store back online next Tuesday, May 24, according to a memo sent to Sony's game developer and publishing partners. — The company has sent a tentative publishing schedule …

2018 Top 100 Global Tech Leaders — 21st century technology-sector leadership requires more than financial success. It also requires a commitment to compliance, innovation, and much more. Who are today's leaders?